Araceae (PDF)

58ARACEAEpurple, globose, opening by an apical pore. Appendix whitishpurple proximally, dark purple distally, 6–7 cm (includingstipe), base swollen, 3–4 mm in diam., attenuate into stipe ca.10 × 1 mm. Fl. Jun–Jul.● Pinus forests, deciduous broad-leaved forests in valleys,secondary thickets; 2400–3200 m. SW Sichuan, NW Yunnan.44. Arisaema fargesii Buchet, Notul. Syst. (Paris) 1: 371. 1911.螃 蟹 七 pang xie qiArisaema bogneri P. C. Boyce & H. Li.Plants dioecious. Tuber subglobose, 3–5 cm in diam., witha few tubercles. Cataphylls 3, brown, inner one ca. 15 cm. Leafsolitary; petiole 20–40 cm, base 6–7 mm in diam., proximal 1/4sheathing into pseudostem; leaf blade 3-foliolate; leaflets sessile,membranous; central leaflet rhombic or ovate-oblong toovate, 12–32 × 9–27 cm, base shortly cuneate or combined withlateral leaflets, apex acute; lateral leaflets obliquely elliptic,outer side semiovate, 9–23 × 6–16 cm. Peduncle emerging frompseudostem, slender and shorter than petioles, 18–26 cm.Spathe purple with whitish longitudinal lines; tube subcylindric,4–8 × 1.5–2 cm, throat margins recurved and auriculate; limbarching or suberect, narrowly triangular, 6–12 × 4–4.5 cm, apexlong acuminate with a tail 1–4 cm. Spadix unisexual; femalezone ca. 2 cm; ovary obovoid; stigma subsessile, papillose;male zone cylindric, 2.5–3 cm × 4–5 mm; synandria of 2–4stamens; thecae ovoid, opening by an apical pore. Appendixrobust, suberect or slightly recurved, narrowly conic, long acuminatetoward apex, 4.5–9 cm, proximal part 7–15 mm indiam., base attenuate into a short stipe, apex obtuse, ca. 5 mmin diam. Fl. May–Jun.● Forests, thickets, in rocks; 900–2000 m. Chongqing, S Gansu,W Hubei, Hunan, Sichuan, E Xizang, NW Yunnan (Gongshan).7. Arisaema sect. Tortuosa (Engler) H. Hara, Bull. Univ. Mus. Univ. Tokyo 2: 344. 1971.曲 序 组 qu xu zuArisaema [unranked] Tortuosa Engler, Pflanzenr. 73(IV. 23F): 185. 1920; Flagellarisaema Nakai.Underground stems tuberous. Phyllotaxy quincuncial. Leaves 1 or 2(or 3); leaf blade 3-foliolate or pedate. Spathe limb erect orincurved, usually ovate. Spadix: thecae dehiscing by apical lunate slit or by pore; appendix elongate, sigmoid, tortuous, base graduallyattenuate and sessile, without neuter flowers.About 18 species: E Asia, North America; 12 species (seven endemic) in China.1a. Spathe basically purplish.2a. Flowering in autumn; spathe throat not auriculate ............................................................................................. 55. A. thunbergii2b. Flowering in spring; spathe throat broadly auriculate.3a. Spathe limb basally narrowed, not united with oblong auricles, showing 3-lobed appearance .............. 49. A. auriculatum3b. Spathe limb basally expanded and united with expanded part of spathe throat, showing singlecordate appearance ........................................................................................................................................ 56. A. cordatum1b. Spathe basically green or white.4a. Spathe white.5a. Leaf blade 3-foliolate; mature spadix bisexual ............................................................................................. 53. A. odoratum5b. Leaf blade pedately 5–7(–9)-foliolate; mature spadix female .......................................................................... 54. A. mairei4b. Spathe green.6a. Central leaflet much smaller than adjacent lateral leaflets .................................................................... 51. A. heterophyllum6b. Central leaflet ca. as large as or larger than adjacent lateral leaflets.7a. Spadix bisexual when mature ................................................................................................................ 50. A. tortuosum7b. Spadix female when mature.8a. Leaf blade (1–)3–5-foliolate; leaflets linear to narrowly oblong; ovary fusiform ............................. 45. A. saxatile8b. Leaf blade 3- or 5- or more foliolate; leaflets lanceolate to oblong; ovary bottle-shaped.9a. Spadix appendix filiform, 8–16 cm, usually pendulous.10a. Leaf blade 3-foliolate; mature spadix bisexual ................................................................... 48. A. prazeri10b. Leaf blade 5–9-foliolate; mature spadix female .................................................................. 52. A. aridum9b. Spadix appendix narrowly attenuate, less than 7 cm, curved forward.11a. Leaf blade 3-foliolate .................................................................................................... 46. A. yunnanense11b. Leaf blade 5-foliolate ............................................................................................ 47. A. quinquelobatum45. Arisaema saxatile Buchet, Notul. Syst. (Paris) 2: 124. 1911.银 南 星 yin nan xingArisaema bathycoleum Handel-Mazzetti; A. lineareBuchet.Plants dioecious. Tuber renewed seasonally, depressedglobose, 1–2 cm in diam. Cataphylls 2, creamy green, membranous,acute. Leaves 1 or 2; petiole green without spots, 9–25cm, proximally forming pseudostem; leaf blade 3-foliolate orpedately 5-foliolate; leaflets sessile or subsessile, green, narrowlylanceolate or elliptic, papery, margin entire; terminalleaflet 4–12 × 0.5–2.5 cm. Peduncle emerging from pseudostem,green, usually longer than petioles, 15–28 cm. Spathegreen or pale green; tube funnelform, 5–6 × 1–2 cm, throat mar-